Finding the Fourth Proportional to 8,642,913,118.42, 11,920,639,459.98 and 7,439,302,884.28
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Solution
The fourth proportional to 8,642,913,118.42, 11,920,639,459.98 and 7,439,302,884.28 is: 10,260,573,755.87
Step by Step Solution
- Step 1: Write the proportion equation
8,642,913,118.42 : 11,920,639,459.98 = 7,439,302,884.28 : x - Step 2: Convert to fraction form
8,642,913,118.42/11,920,639,459.98 = 7,439,302,884.28/x - Step 3: Cross multiply
8,642,913,118.42x = 11,920,639,459.98 × 7,439,302,884.28 - Step 4: Simplify right side
8,642,913,118.42x = 88,681,247,517,091,184,640 - Step 5: Solve for x
x = 88,681,247,517,091,184,640/8,642,913,118.42 - Step 6: Final answer
x = 10,260,573,755.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.